I'm trying to do some confirmatory factor analysis on some data. My SEM
model solves in 22 iterations, but when I try to look at the modification
indices, using mod.indices, I get the following error message:

Error in solve.default(hessian) :
  system is computationally singular: reciprocal condition number =
4.40283e-18

What does this mean?

Many thanks,

Dan

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